The Errol Morris mini-documentary (see also here) on the Umbrella Man (Morris and Thompson are both heroes in their respective fields). The various shooters couldn't see what was going on (but could easily see the umbrella). The man was part of the spotting team, located right where the shots were to hit so he could immediately see when the fatal shot landed. He could then signal for the shooting team to stop shooting. They were to shoot until they received his signal to stop.
Is there a certain genius in coming up with the least plausible excuse to explain what you were doing?
Some think the other member of the spotting team was Orlando Bosch.
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